CSEMP assessment of CB138 in sediment at inner (Firth of Clyde)

Statistical analysis

Trend assessment

Analysis of variance

 DfAICAICcLog likDevianceChisqChi dfPr(>Chisq)
linear2145.59148.06-68.80137.590.545 10.4605
smooth (df = 2)3146.58150.74-68.29136.581.019 10.3127
smooth (df = 3)4146.91153.46-67.46134.911.660 10.1976
smooth (df = 4)5146.07155.87-66.04132.072.843 10.0918

Change in log concentration

 Year startYear endFit startFit endChangeStd errortPr(>|t|)
last 20 years199920180.40750.61520.207640.278290.7460.4671

Status assessment

 Conc fittedConc refLog ratioStd errortPr(>t)
BAC1.850.15-2.5123 0.1501-16.7351.0000
EAC1.857.90 1.4517 0.1501 9.670<0.0001


Related pages

  • Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
  • Assessment methodology for in sediment
  • Accessment criteria for in sediment